Calcium polonide
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| Names | |
|---|---|
| Preferred IUPAC name
Calcium polonide | |
| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
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CompTox Dashboard (EPA)
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| Properties | |
| CaPo | |
| Molar mass | 249 g·mol−1 |
| Density | 6.0 g/cm3 |
| Structure[1] | |
| Rock Salt (cubic) | |
| Fm3m (No. 225) | |
a = 0.6514 nm
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Calcium polonide is an intermetallic compound with the chemical formula CaPo. It is made up of calcium and polonium. Rather than being found in nature, the compound is entirely synthetic, and difficult to study, due to polonium's high vapor pressure, radioactivity, and easy oxidation in air.
Structure
[edit | edit source]At atmospheric pressure, it crystalizes in the cubic rock salt crystal structure.[1] At a high pressure of around 16.7 GPa, the structure is predicted to transform to the caesium chloride-type crystal structure.[2]
Electronic properties
[edit | edit source]Based on theoretical calculations, calcium polonide is predicted to be a semiconductor.[3]
See also
[edit | edit source]References
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